Dispersion characteristics in disk-on-pillar array nanostructures for surface-enhanced raman spectroscopy

Alessia Polemi; Sabrina M. Wells; Nickolay V. Lavrik; Michael J. Sepaniak; Kevin L. Shuford

doi:10.1021/jp2032059

Dispersion characteristics in disk-on-pillar array nanostructures for surface-enhanced raman spectroscopy

Alessia Polemi, Sabrina M. Wells, Nickolay V. Lavrik, Michael J. Sepaniak, Kevin L. Shuford

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

In this paper, we analyze periodic disk-on-pillar nanoarrays as a platform for surface-enhanced Raman spectroscopy measurements. The nanostructure is a two-dimensional grating of silicon pillars covered by thin layers of silica and silver. The system supports both localized surface plasmons and surface plasmon polaritons. We investigate the dispersion characteristics of the nanoarray and present the relevant field distribution for each plasmon mode. The interaction between localized and propagating modes can be tuned to synergistically enhance the electric field, which results in larger surface-enhanced Raman signals. We find that utilizing this effect can generate Raman enhancements that are approximately 1000 times larger than that of an isolated pillar under the same excitation conditions.

Original language	English
Pages (from-to)	13624-13629
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	115
Issue number	28
DOIs	https://doi.org/10.1021/jp2032059
State	Published - Jul 21 2011

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title = "Dispersion characteristics in disk-on-pillar array nanostructures for surface-enhanced raman spectroscopy",

abstract = "In this paper, we analyze periodic disk-on-pillar nanoarrays as a platform for surface-enhanced Raman spectroscopy measurements. The nanostructure is a two-dimensional grating of silicon pillars covered by thin layers of silica and silver. The system supports both localized surface plasmons and surface plasmon polaritons. We investigate the dispersion characteristics of the nanoarray and present the relevant field distribution for each plasmon mode. The interaction between localized and propagating modes can be tuned to synergistically enhance the electric field, which results in larger surface-enhanced Raman signals. We find that utilizing this effect can generate Raman enhancements that are approximately 1000 times larger than that of an isolated pillar under the same excitation conditions.",

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T1 - Dispersion characteristics in disk-on-pillar array nanostructures for surface-enhanced raman spectroscopy

AU - Polemi, Alessia

AU - Wells, Sabrina M.

AU - Lavrik, Nickolay V.

AU - Sepaniak, Michael J.

AU - Shuford, Kevin L.

PY - 2011/7/21

Y1 - 2011/7/21

N2 - In this paper, we analyze periodic disk-on-pillar nanoarrays as a platform for surface-enhanced Raman spectroscopy measurements. The nanostructure is a two-dimensional grating of silicon pillars covered by thin layers of silica and silver. The system supports both localized surface plasmons and surface plasmon polaritons. We investigate the dispersion characteristics of the nanoarray and present the relevant field distribution for each plasmon mode. The interaction between localized and propagating modes can be tuned to synergistically enhance the electric field, which results in larger surface-enhanced Raman signals. We find that utilizing this effect can generate Raman enhancements that are approximately 1000 times larger than that of an isolated pillar under the same excitation conditions.

AB - In this paper, we analyze periodic disk-on-pillar nanoarrays as a platform for surface-enhanced Raman spectroscopy measurements. The nanostructure is a two-dimensional grating of silicon pillars covered by thin layers of silica and silver. The system supports both localized surface plasmons and surface plasmon polaritons. We investigate the dispersion characteristics of the nanoarray and present the relevant field distribution for each plasmon mode. The interaction between localized and propagating modes can be tuned to synergistically enhance the electric field, which results in larger surface-enhanced Raman signals. We find that utilizing this effect can generate Raman enhancements that are approximately 1000 times larger than that of an isolated pillar under the same excitation conditions.

UR - https://www.scopus.com/pages/publications/79960389503

U2 - 10.1021/jp2032059

DO - 10.1021/jp2032059

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SN - 1932-7447

VL - 115

SP - 13624

EP - 13629

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 28

ER -

Dispersion characteristics in disk-on-pillar array nanostructures for surface-enhanced raman spectroscopy

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